Question

Произведение степени и корня

Answer 1

$\sqrt[n]{x^{k} } = x^{k/n} \\x^{a+b} = x^{a}*x^{b}\\x^{7/9}*\sqrt[9]{x^{4} } = x^{7/9}*x^{4/9} = x^{7/9 + 4/9} = x^{11/9}$